Sprocket



FIG. 1 is a front perspective view of an embodiment of my new design;

FIG. 2 is a front view of the embodiment of the claimed design shown in FIG. 1;

FIG. 3 is a rear perspective view of the embodiment of the claimed design shown in FIG. 1;

FIG. 4 is a rear view of the embodiment of the claimed design shown in FIG. 1; and,

FIG. 5 is a side view of the embodiment of the claimed design shown in FIG. 1.

The broken lines illustrate the environmental structure that form no part of the claimed design. 

CLAIM I claim the ornamental design for a sprocket, as shown and described. 